src/extensions/browser/api/usb/usb_device_resource.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_BROWSER_API_USB_USB_DEVICE_RESOURCE_H_
   6 #define EXTENSIONS_BROWSER_API_USB_USB_DEVICE_RESOURCE_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "base/basictypes.h"
  12 #include "base/memory/linked_ptr.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/synchronization/lock.h"
  15 #include "components/usb_service/usb_device_handle.h"
  16 #include "content/public/browser/browser_thread.h"
  17 #include "extensions/browser/api/api_resource.h"
  18 #include "extensions/browser/api/api_resource_manager.h"
  19 #include "extensions/common/api/usb.h"
  20
  21 namespace net {
  22 class IOBuffer;
  23 }  // namespace net
  24
  25 namespace extensions {
  26
  27 // A UsbDeviceResource is an ApiResource wrapper for a UsbDevice.
  28 class UsbDeviceResource : public ApiResource {
  29  public:
  30   UsbDeviceResource(const std::string& owner_extension_id,
  31                     scoped_refptr<usb_service::UsbDeviceHandle> device);
  32   virtual ~UsbDeviceResource();
  33
  34   scoped_refptr<usb_service::UsbDeviceHandle> device() { return device_; }
  35
  36   static const content::BrowserThread::ID kThreadId =
  37       content::BrowserThread::FILE;
  38
  39  private:
  40   friend class ApiResourceManager<UsbDeviceResource>;
  41   static const char* service_name() { return "UsbDeviceResourceManager"; }
  42
  43   scoped_refptr<usb_service::UsbDeviceHandle> device_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(UsbDeviceResource);
  46 };
  47
  48 }  // namespace extensions
  49
  50 #endif  // EXTENSIONS_BROWSER_API_USB_USB_DEVICE_RESOURCE_H_